Xiaomi Redmi Note 4 (xiaomi-mido)

Features
Flashing	Works
USB Networking	Works
Internal storage	Works
SD card	Works
Battery	Works
Screen	Works
Touchscreen	Works
Multimedia
3D Acceleration	Works
Audio	Works
Camera	Partial
Camera Flash
IR TX	Works
Connectivity
WiFi	Works
Bluetooth	Works
GPS	Partial
Modem
Calls	Works
SMS	Works
Mobile data	Partial
Miscellaneous
FDE	Works
USB OTG	Works
HDMI/DP
Sensors
Accelerometer	Works
Magnetometer
Ambient Light
Proximity
Hall Effect
Haptics
Barometer

Xiaomi Redmi Note 4 /
4X
	; Xiaomi Redmi Note 4
Manufacturer	Xiaomi
Name	Redmi Note 4 /; 4X
Codename	xiaomi-mido
Released	2017
Type	handset
Hardware
Chipset	Qualcomm Snapdragon 625 (MSM8953)
CPU	Octa-core 2 GHz Cortex-A53
GPU	Adreno 506
Display	1080x1920
Storage	16 GB / 32 GB / 64 GB
Memory	2 GB / 3 GB / 4 GB
Architecture	aarch64
Software
Original software	Android (MIUI)
Original version	6 (MIUI 9)
postmarketOS
Category	community
Pre-built images	yes
Unixbench Whet/Dhry score	3697.5

Maintainer(s)

User:Bczeman

Contributors

User:Kiciuk

Users owning this device

6yntar05 (Notes: Daily Driver)
Bczeman
Eldyj (Notes: Daily driver, 32gb, chinese display (damaged)&battery, black screen when booting PMOS, running Voltage OS)
Gravitos (Notes: Only visual damage)
Icenowy
Jan64X
Joel
Kiciuk (Notes: Daily Driver-currently mainlining)
Lassebq
Lucid (Notes: Daily Driver)
Marc0x (Notes: 2 , one with broken display)
Marineboy1
Mighty (Notes: Daily Driver)
Overbafer1
Qwertz (Notes: Ubuntu Touch/PMOS)
Selfisekai
Serg12344
Sliwkr
Slwyts (Notes: 4GB RAM, 64GB Flash)

Device Notes

Touchscreen

focaltech variant is enabled.
goodix variant is added but disabled in dts. For enable custom lk2nd build is needed and goodix touchscreen-compatible should be selected. https://github.com/msm8916-mainline/lk2nd/blob/main/lk2nd/device/dts/msm8953/msm8953-xiaomi-common.dts#L73-L92.

// touchscreen-compatible = "edt,edt-ft5406";
touchscreen-compatible = "goodix,gt917d";

Modem

Modem works with ipa-lite since 6.7.2, but mobile data is not working on all variants yet, calls and sms are working.

Display Panels

LCD Vendor	IC Vendor	Supported?
BOE	Novatek NT35532	Yes
Tianma	Novatek NT35596	Yes
Tianma	otm1911	Yes
BOE	IlItek ili9885	Need testing
EBBG(Foxconn)	Synaptics r63350	Yes

Camera

Camera Sensor	Package vendor	Supported?
Sony IMX258	Ofilm/qtech/sunny	imx258.c in mainline - need testing
Samsung S5K3L8	Ofilm/qtech/sunny	It was added to 6.7.5 and configuration is merged in megapixels.
Samsung S5K5E8	Ofilm/qtech/sunny	No support for now
Omnivision ov13855	Ofilm/qtech/sunny	No support for now

Battery

Battery Vendor	Supported?
Desay lisheng 4v4	Yes
Sunwooda atl	Yes

Sensors

Bosch BMI160 is supported since 6.6.8 All sensors are handled by remote processor and exposed via QMI, they all will work once proper driver lands in mainline.

IR led

IR led support is landed in 6.7.2. It can be used with: # ir-ctl -S rc5:0x1e01

GPS

Qualcomm_Snapdragon_450/625/626/632_(MSM8953)#GPS

Installation

Follow the Installation guide

Warning: Flashing lk2nd is required, as it is a hard dependency. Without it the mainline kernel will not select the display panel (resulting in black screen on boot).

$ pmbootstrap install
$ pmbootstrap flasher flash_lk2nd
$ pmbootstrap flasher flash_rootfs

How to enter flash mode

Stock Fastboot: Power on the device with both Power and Volume Down buttons
lk2nd Fastboot: Power on the device. After it vibrates, hold Volume Down

Note: Pressing the keys too early will cause the stock bootloader to handle the key combination. You will end up in the wrong Fastboot interface.

Recovery: Power on the device with both Power and Volume Up buttons